A Room-by-Room LED Lighting Planning Guide
Room-by-room LED lighting planning works because each space asks a different question. A kitchen needs light on a work surface without glare in the eye. A bathroom needs an IP rating that suits real moisture. A stair needs even coverage more than it needs output. Decide brightness, color temperature and IP rating one room at a time, keep the kelvin figure consistent across rooms you can see into from one another, and the whole house holds together.
Three decisions that come before any room
Brightness first, expressed as lumens per foot rather than watts, because watts describe consumption. Then color temperature: pick a kelvin figure per room and keep it identical wherever two spaces share a sightline. Then the IP rating, which is decided by real exposure and given as an exact figure, IP20, IP65 or IP67, never as the word waterproof.
Everything else follows from those three. Voltage matching is not negotiable: 24V tape needs a 24V source, 12V tape a 12V source. Driver capacity follows from published watts per foot multiplied across the feet you install, with at least 20 percent of current headroom on top (verify the figure that applies before ordering). Hardwired supplies, junction boxes, wall dimmers and new circuits belong to a licensed electrician under manufacturer instructions, local code and the NEC where it applies.
